d3.c revision 6d9d32b89ab0f9cbd182f807cc484e66e15c6972
1/****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of version 2 of the GNU General Public License as 12 * published by the Free Software Foundation. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 22 * USA 23 * 24 * The full GNU General Public License is included in this distribution 25 * in the file called COPYING. 26 * 27 * Contact Information: 28 * Intel Linux Wireless <ilw@linux.intel.com> 29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 30 * 31 * BSD LICENSE 32 * 33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 40 * * Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * * Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in 44 * the documentation and/or other materials provided with the 45 * distribution. 46 * * Neither the name Intel Corporation nor the names of its 47 * contributors may be used to endorse or promote products derived 48 * from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 * 62 *****************************************************************************/ 63 64#include <linux/etherdevice.h> 65#include <linux/ip.h> 66#include <linux/fs.h> 67#include <net/cfg80211.h> 68#include <net/ipv6.h> 69#include <net/tcp.h> 70#include <net/addrconf.h> 71#include "iwl-modparams.h" 72#include "fw-api.h" 73#include "mvm.h" 74 75void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, 76 struct ieee80211_vif *vif, 77 struct cfg80211_gtk_rekey_data *data) 78{ 79 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 80 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 81 82 if (iwlwifi_mod_params.sw_crypto) 83 return; 84 85 mutex_lock(&mvm->mutex); 86 87 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN); 88 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN); 89 mvmvif->rekey_data.replay_ctr = 90 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); 91 mvmvif->rekey_data.valid = true; 92 93 mutex_unlock(&mvm->mutex); 94} 95 96#if IS_ENABLED(CONFIG_IPV6) 97void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, 98 struct ieee80211_vif *vif, 99 struct inet6_dev *idev) 100{ 101 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 102 struct inet6_ifaddr *ifa; 103 int idx = 0; 104 105 read_lock_bh(&idev->lock); 106 list_for_each_entry(ifa, &idev->addr_list, if_list) { 107 mvmvif->target_ipv6_addrs[idx] = ifa->addr; 108 idx++; 109 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) 110 break; 111 } 112 read_unlock_bh(&idev->lock); 113 114 mvmvif->num_target_ipv6_addrs = idx; 115} 116#endif 117 118void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, 119 struct ieee80211_vif *vif, int idx) 120{ 121 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 122 123 mvmvif->tx_key_idx = idx; 124} 125 126static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) 127{ 128 int i; 129 130 for (i = 0; i < IWL_P1K_SIZE; i++) 131 out[i] = cpu_to_le16(p1k[i]); 132} 133 134struct wowlan_key_data { 135 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc; 136 struct iwl_wowlan_tkip_params_cmd *tkip; 137 bool error, use_rsc_tsc, use_tkip; 138 int wep_key_idx; 139}; 140 141static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, 142 struct ieee80211_vif *vif, 143 struct ieee80211_sta *sta, 144 struct ieee80211_key_conf *key, 145 void *_data) 146{ 147 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 148 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 149 struct wowlan_key_data *data = _data; 150 struct aes_sc *aes_sc, *aes_tx_sc = NULL; 151 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; 152 struct iwl_p1k_cache *rx_p1ks; 153 u8 *rx_mic_key; 154 struct ieee80211_key_seq seq; 155 u32 cur_rx_iv32 = 0; 156 u16 p1k[IWL_P1K_SIZE]; 157 int ret, i; 158 159 mutex_lock(&mvm->mutex); 160 161 switch (key->cipher) { 162 case WLAN_CIPHER_SUITE_WEP40: 163 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ 164 struct { 165 struct iwl_mvm_wep_key_cmd wep_key_cmd; 166 struct iwl_mvm_wep_key wep_key; 167 } __packed wkc = { 168 .wep_key_cmd.mac_id_n_color = 169 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 170 mvmvif->color)), 171 .wep_key_cmd.num_keys = 1, 172 /* firmware sets STA_KEY_FLG_WEP_13BYTES */ 173 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, 174 .wep_key.key_index = key->keyidx, 175 .wep_key.key_size = key->keylen, 176 }; 177 178 /* 179 * This will fail -- the key functions don't set support 180 * pairwise WEP keys. However, that's better than silently 181 * failing WoWLAN. Or maybe not? 182 */ 183 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 184 break; 185 186 memcpy(&wkc.wep_key.key[3], key->key, key->keylen); 187 if (key->keyidx == mvmvif->tx_key_idx) { 188 /* TX key must be at offset 0 */ 189 wkc.wep_key.key_offset = 0; 190 } else { 191 /* others start at 1 */ 192 data->wep_key_idx++; 193 wkc.wep_key.key_offset = data->wep_key_idx; 194 } 195 196 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, CMD_SYNC, 197 sizeof(wkc), &wkc); 198 data->error = ret != 0; 199 200 mvm->ptk_ivlen = key->iv_len; 201 mvm->ptk_icvlen = key->icv_len; 202 mvm->gtk_ivlen = key->iv_len; 203 mvm->gtk_icvlen = key->icv_len; 204 205 /* don't upload key again */ 206 goto out_unlock; 207 } 208 default: 209 data->error = true; 210 goto out_unlock; 211 case WLAN_CIPHER_SUITE_AES_CMAC: 212 /* 213 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them 214 * but we also shouldn't abort suspend due to that. It does have 215 * support for the IGTK key renewal, but doesn't really use the 216 * IGTK for anything. This means we could spuriously wake up or 217 * be deauthenticated, but that was considered acceptable. 218 */ 219 goto out_unlock; 220 case WLAN_CIPHER_SUITE_TKIP: 221 if (sta) { 222 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; 223 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; 224 225 rx_p1ks = data->tkip->rx_uni; 226 227 ieee80211_get_key_tx_seq(key, &seq); 228 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); 229 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); 230 231 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); 232 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k); 233 234 memcpy(data->tkip->mic_keys.tx, 235 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 236 IWL_MIC_KEY_SIZE); 237 238 rx_mic_key = data->tkip->mic_keys.rx_unicast; 239 } else { 240 tkip_sc = 241 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; 242 rx_p1ks = data->tkip->rx_multi; 243 rx_mic_key = data->tkip->mic_keys.rx_mcast; 244 } 245 246 /* 247 * For non-QoS this relies on the fact that both the uCode and 248 * mac80211 use TID 0 (as they need to to avoid replay attacks) 249 * for checking the IV in the frames. 250 */ 251 for (i = 0; i < IWL_NUM_RSC; i++) { 252 ieee80211_get_key_rx_seq(key, i, &seq); 253 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); 254 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); 255 /* wrapping isn't allowed, AP must rekey */ 256 if (seq.tkip.iv32 > cur_rx_iv32) 257 cur_rx_iv32 = seq.tkip.iv32; 258 } 259 260 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 261 cur_rx_iv32, p1k); 262 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); 263 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, 264 cur_rx_iv32 + 1, p1k); 265 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); 266 267 memcpy(rx_mic_key, 268 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 269 IWL_MIC_KEY_SIZE); 270 271 data->use_tkip = true; 272 data->use_rsc_tsc = true; 273 break; 274 case WLAN_CIPHER_SUITE_CCMP: 275 if (sta) { 276 u8 *pn = seq.ccmp.pn; 277 278 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; 279 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; 280 281 ieee80211_get_key_tx_seq(key, &seq); 282 aes_tx_sc->pn = cpu_to_le64((u64)pn[5] | 283 ((u64)pn[4] << 8) | 284 ((u64)pn[3] << 16) | 285 ((u64)pn[2] << 24) | 286 ((u64)pn[1] << 32) | 287 ((u64)pn[0] << 40)); 288 } else { 289 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; 290 } 291 292 /* 293 * For non-QoS this relies on the fact that both the uCode and 294 * mac80211 use TID 0 for checking the IV in the frames. 295 */ 296 for (i = 0; i < IWL_NUM_RSC; i++) { 297 u8 *pn = seq.ccmp.pn; 298 299 ieee80211_get_key_rx_seq(key, i, &seq); 300 aes_sc->pn = cpu_to_le64((u64)pn[5] | 301 ((u64)pn[4] << 8) | 302 ((u64)pn[3] << 16) | 303 ((u64)pn[2] << 24) | 304 ((u64)pn[1] << 32) | 305 ((u64)pn[0] << 40)); 306 } 307 data->use_rsc_tsc = true; 308 break; 309 } 310 311 /* 312 * The D3 firmware hardcodes the key offset 0 as the key it uses 313 * to transmit packets to the AP, i.e. the PTK. 314 */ 315 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 316 key->hw_key_idx = 0; 317 mvm->ptk_ivlen = key->iv_len; 318 mvm->ptk_icvlen = key->icv_len; 319 } else { 320 /* 321 * firmware only supports TSC/RSC for a single key, 322 * so if there are multiple keep overwriting them 323 * with new ones -- this relies on mac80211 doing 324 * list_add_tail(). 325 */ 326 key->hw_key_idx = 1; 327 mvm->gtk_ivlen = key->iv_len; 328 mvm->gtk_icvlen = key->icv_len; 329 } 330 331 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true); 332 data->error = ret != 0; 333out_unlock: 334 mutex_unlock(&mvm->mutex); 335} 336 337static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, 338 struct cfg80211_wowlan *wowlan) 339{ 340 struct iwl_wowlan_patterns_cmd *pattern_cmd; 341 struct iwl_host_cmd cmd = { 342 .id = WOWLAN_PATTERNS, 343 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 344 .flags = CMD_SYNC, 345 }; 346 int i, err; 347 348 if (!wowlan->n_patterns) 349 return 0; 350 351 cmd.len[0] = sizeof(*pattern_cmd) + 352 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern); 353 354 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); 355 if (!pattern_cmd) 356 return -ENOMEM; 357 358 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); 359 360 for (i = 0; i < wowlan->n_patterns; i++) { 361 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); 362 363 memcpy(&pattern_cmd->patterns[i].mask, 364 wowlan->patterns[i].mask, mask_len); 365 memcpy(&pattern_cmd->patterns[i].pattern, 366 wowlan->patterns[i].pattern, 367 wowlan->patterns[i].pattern_len); 368 pattern_cmd->patterns[i].mask_size = mask_len; 369 pattern_cmd->patterns[i].pattern_size = 370 wowlan->patterns[i].pattern_len; 371 } 372 373 cmd.data[0] = pattern_cmd; 374 err = iwl_mvm_send_cmd(mvm, &cmd); 375 kfree(pattern_cmd); 376 return err; 377} 378 379static int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, 380 struct ieee80211_vif *vif) 381{ 382 union { 383 struct iwl_proto_offload_cmd_v1 v1; 384 struct iwl_proto_offload_cmd_v2 v2; 385 struct iwl_proto_offload_cmd_v3_small v3s; 386 struct iwl_proto_offload_cmd_v3_large v3l; 387 } cmd = {}; 388 struct iwl_host_cmd hcmd = { 389 .id = PROT_OFFLOAD_CONFIG_CMD, 390 .flags = CMD_SYNC, 391 .data[0] = &cmd, 392 .dataflags[0] = IWL_HCMD_DFL_DUP, 393 }; 394 struct iwl_proto_offload_cmd_common *common; 395 u32 enabled = 0, size; 396 u32 capa_flags = mvm->fw->ucode_capa.flags; 397#if IS_ENABLED(CONFIG_IPV6) 398 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 399 int i; 400 401 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL || 402 capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) { 403 struct iwl_ns_config *nsc; 404 struct iwl_targ_addr *addrs; 405 int n_nsc, n_addrs; 406 int c; 407 408 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) { 409 nsc = cmd.v3s.ns_config; 410 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S; 411 addrs = cmd.v3s.targ_addrs; 412 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S; 413 } else { 414 nsc = cmd.v3l.ns_config; 415 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L; 416 addrs = cmd.v3l.targ_addrs; 417 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L; 418 } 419 420 if (mvmvif->num_target_ipv6_addrs) 421 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 422 423 /* 424 * For each address we have (and that will fit) fill a target 425 * address struct and combine for NS offload structs with the 426 * solicited node addresses. 427 */ 428 for (i = 0, c = 0; 429 i < mvmvif->num_target_ipv6_addrs && 430 i < n_addrs && c < n_nsc; i++) { 431 struct in6_addr solicited_addr; 432 int j; 433 434 addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i], 435 &solicited_addr); 436 for (j = 0; j < c; j++) 437 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr, 438 &solicited_addr) == 0) 439 break; 440 if (j == c) 441 c++; 442 addrs[i].addr = mvmvif->target_ipv6_addrs[i]; 443 addrs[i].config_num = cpu_to_le32(j); 444 nsc[j].dest_ipv6_addr = solicited_addr; 445 memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN); 446 } 447 448 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) 449 cmd.v3s.num_valid_ipv6_addrs = cpu_to_le32(i); 450 else 451 cmd.v3l.num_valid_ipv6_addrs = cpu_to_le32(i); 452 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) { 453 if (mvmvif->num_target_ipv6_addrs) { 454 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 455 memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN); 456 } 457 458 BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) != 459 sizeof(mvmvif->target_ipv6_addrs[0])); 460 461 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs, 462 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++) 463 memcpy(cmd.v2.target_ipv6_addr[i], 464 &mvmvif->target_ipv6_addrs[i], 465 sizeof(cmd.v2.target_ipv6_addr[i])); 466 } else { 467 if (mvmvif->num_target_ipv6_addrs) { 468 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 469 memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN); 470 } 471 472 BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) != 473 sizeof(mvmvif->target_ipv6_addrs[0])); 474 475 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs, 476 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++) 477 memcpy(cmd.v1.target_ipv6_addr[i], 478 &mvmvif->target_ipv6_addrs[i], 479 sizeof(cmd.v1.target_ipv6_addr[i])); 480 } 481#endif 482 483 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) { 484 common = &cmd.v3s.common; 485 size = sizeof(cmd.v3s); 486 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) { 487 common = &cmd.v3l.common; 488 size = sizeof(cmd.v3l); 489 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) { 490 common = &cmd.v2.common; 491 size = sizeof(cmd.v2); 492 } else { 493 common = &cmd.v1.common; 494 size = sizeof(cmd.v1); 495 } 496 497 if (vif->bss_conf.arp_addr_cnt) { 498 enabled |= IWL_D3_PROTO_OFFLOAD_ARP; 499 common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0]; 500 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN); 501 } 502 503 if (!enabled) 504 return 0; 505 506 common->enabled = cpu_to_le32(enabled); 507 508 hcmd.len[0] = size; 509 return iwl_mvm_send_cmd(mvm, &hcmd); 510} 511 512enum iwl_mvm_tcp_packet_type { 513 MVM_TCP_TX_SYN, 514 MVM_TCP_RX_SYNACK, 515 MVM_TCP_TX_DATA, 516 MVM_TCP_RX_ACK, 517 MVM_TCP_RX_WAKE, 518 MVM_TCP_TX_FIN, 519}; 520 521static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr) 522{ 523 __sum16 check = tcp_v4_check(len, saddr, daddr, 0); 524 return cpu_to_le16(be16_to_cpu((__force __be16)check)); 525} 526 527static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif, 528 struct cfg80211_wowlan_tcp *tcp, 529 void *_pkt, u8 *mask, 530 __le16 *pseudo_hdr_csum, 531 enum iwl_mvm_tcp_packet_type ptype) 532{ 533 struct { 534 struct ethhdr eth; 535 struct iphdr ip; 536 struct tcphdr tcp; 537 u8 data[]; 538 } __packed *pkt = _pkt; 539 u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr); 540 int i; 541 542 pkt->eth.h_proto = cpu_to_be16(ETH_P_IP), 543 pkt->ip.version = 4; 544 pkt->ip.ihl = 5; 545 pkt->ip.protocol = IPPROTO_TCP; 546 547 switch (ptype) { 548 case MVM_TCP_TX_SYN: 549 case MVM_TCP_TX_DATA: 550 case MVM_TCP_TX_FIN: 551 memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN); 552 memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN); 553 pkt->ip.ttl = 128; 554 pkt->ip.saddr = tcp->src; 555 pkt->ip.daddr = tcp->dst; 556 pkt->tcp.source = cpu_to_be16(tcp->src_port); 557 pkt->tcp.dest = cpu_to_be16(tcp->dst_port); 558 /* overwritten for TX SYN later */ 559 pkt->tcp.doff = sizeof(struct tcphdr) / 4; 560 pkt->tcp.window = cpu_to_be16(65000); 561 break; 562 case MVM_TCP_RX_SYNACK: 563 case MVM_TCP_RX_ACK: 564 case MVM_TCP_RX_WAKE: 565 memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN); 566 memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN); 567 pkt->ip.saddr = tcp->dst; 568 pkt->ip.daddr = tcp->src; 569 pkt->tcp.source = cpu_to_be16(tcp->dst_port); 570 pkt->tcp.dest = cpu_to_be16(tcp->src_port); 571 break; 572 default: 573 WARN_ON(1); 574 return; 575 } 576 577 switch (ptype) { 578 case MVM_TCP_TX_SYN: 579 /* firmware assumes 8 option bytes - 8 NOPs for now */ 580 memset(pkt->data, 0x01, 8); 581 ip_tot_len += 8; 582 pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4; 583 pkt->tcp.syn = 1; 584 break; 585 case MVM_TCP_TX_DATA: 586 ip_tot_len += tcp->payload_len; 587 memcpy(pkt->data, tcp->payload, tcp->payload_len); 588 pkt->tcp.psh = 1; 589 pkt->tcp.ack = 1; 590 break; 591 case MVM_TCP_TX_FIN: 592 pkt->tcp.fin = 1; 593 pkt->tcp.ack = 1; 594 break; 595 case MVM_TCP_RX_SYNACK: 596 pkt->tcp.syn = 1; 597 pkt->tcp.ack = 1; 598 break; 599 case MVM_TCP_RX_ACK: 600 pkt->tcp.ack = 1; 601 break; 602 case MVM_TCP_RX_WAKE: 603 ip_tot_len += tcp->wake_len; 604 pkt->tcp.psh = 1; 605 pkt->tcp.ack = 1; 606 memcpy(pkt->data, tcp->wake_data, tcp->wake_len); 607 break; 608 } 609 610 switch (ptype) { 611 case MVM_TCP_TX_SYN: 612 case MVM_TCP_TX_DATA: 613 case MVM_TCP_TX_FIN: 614 pkt->ip.tot_len = cpu_to_be16(ip_tot_len); 615 pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl); 616 break; 617 case MVM_TCP_RX_WAKE: 618 for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) { 619 u8 tmp = tcp->wake_mask[i]; 620 mask[i + 6] |= tmp << 6; 621 if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8)) 622 mask[i + 7] = tmp >> 2; 623 } 624 /* fall through for ethernet/IP/TCP headers mask */ 625 case MVM_TCP_RX_SYNACK: 626 case MVM_TCP_RX_ACK: 627 mask[0] = 0xff; /* match ethernet */ 628 /* 629 * match ethernet, ip.version, ip.ihl 630 * the ip.ihl half byte is really masked out by firmware 631 */ 632 mask[1] = 0x7f; 633 mask[2] = 0x80; /* match ip.protocol */ 634 mask[3] = 0xfc; /* match ip.saddr, ip.daddr */ 635 mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */ 636 mask[5] = 0x80; /* match tcp flags */ 637 /* leave rest (0 or set for MVM_TCP_RX_WAKE) */ 638 break; 639 }; 640 641 *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr), 642 pkt->ip.saddr, pkt->ip.daddr); 643} 644 645static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm, 646 struct ieee80211_vif *vif, 647 struct cfg80211_wowlan_tcp *tcp) 648{ 649 struct iwl_wowlan_remote_wake_config *cfg; 650 struct iwl_host_cmd cmd = { 651 .id = REMOTE_WAKE_CONFIG_CMD, 652 .len = { sizeof(*cfg), }, 653 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 654 .flags = CMD_SYNC, 655 }; 656 int ret; 657 658 if (!tcp) 659 return 0; 660 661 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); 662 if (!cfg) 663 return -ENOMEM; 664 cmd.data[0] = cfg; 665 666 cfg->max_syn_retries = 10; 667 cfg->max_data_retries = 10; 668 cfg->tcp_syn_ack_timeout = 1; /* seconds */ 669 cfg->tcp_ack_timeout = 1; /* seconds */ 670 671 /* SYN (TX) */ 672 iwl_mvm_build_tcp_packet( 673 vif, tcp, cfg->syn_tx.data, NULL, 674 &cfg->syn_tx.info.tcp_pseudo_header_checksum, 675 MVM_TCP_TX_SYN); 676 cfg->syn_tx.info.tcp_payload_length = 0; 677 678 /* SYN/ACK (RX) */ 679 iwl_mvm_build_tcp_packet( 680 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask, 681 &cfg->synack_rx.info.tcp_pseudo_header_checksum, 682 MVM_TCP_RX_SYNACK); 683 cfg->synack_rx.info.tcp_payload_length = 0; 684 685 /* KEEPALIVE/ACK (TX) */ 686 iwl_mvm_build_tcp_packet( 687 vif, tcp, cfg->keepalive_tx.data, NULL, 688 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum, 689 MVM_TCP_TX_DATA); 690 cfg->keepalive_tx.info.tcp_payload_length = 691 cpu_to_le16(tcp->payload_len); 692 cfg->sequence_number_offset = tcp->payload_seq.offset; 693 /* length must be 0..4, the field is little endian */ 694 cfg->sequence_number_length = tcp->payload_seq.len; 695 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start); 696 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval); 697 if (tcp->payload_tok.len) { 698 cfg->token_offset = tcp->payload_tok.offset; 699 cfg->token_length = tcp->payload_tok.len; 700 cfg->num_tokens = 701 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len); 702 memcpy(cfg->tokens, tcp->payload_tok.token_stream, 703 tcp->tokens_size); 704 } else { 705 /* set tokens to max value to almost never run out */ 706 cfg->num_tokens = cpu_to_le16(65535); 707 } 708 709 /* ACK (RX) */ 710 iwl_mvm_build_tcp_packet( 711 vif, tcp, cfg->keepalive_ack_rx.data, 712 cfg->keepalive_ack_rx.rx_mask, 713 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum, 714 MVM_TCP_RX_ACK); 715 cfg->keepalive_ack_rx.info.tcp_payload_length = 0; 716 717 /* WAKEUP (RX) */ 718 iwl_mvm_build_tcp_packet( 719 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask, 720 &cfg->wake_rx.info.tcp_pseudo_header_checksum, 721 MVM_TCP_RX_WAKE); 722 cfg->wake_rx.info.tcp_payload_length = 723 cpu_to_le16(tcp->wake_len); 724 725 /* FIN */ 726 iwl_mvm_build_tcp_packet( 727 vif, tcp, cfg->fin_tx.data, NULL, 728 &cfg->fin_tx.info.tcp_pseudo_header_checksum, 729 MVM_TCP_TX_FIN); 730 cfg->fin_tx.info.tcp_payload_length = 0; 731 732 ret = iwl_mvm_send_cmd(mvm, &cmd); 733 kfree(cfg); 734 735 return ret; 736} 737 738struct iwl_d3_iter_data { 739 struct iwl_mvm *mvm; 740 struct ieee80211_vif *vif; 741 bool error; 742}; 743 744static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac, 745 struct ieee80211_vif *vif) 746{ 747 struct iwl_d3_iter_data *data = _data; 748 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 749 750 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 751 return; 752 753 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) 754 return; 755 756 if (data->vif) { 757 IWL_ERR(data->mvm, "More than one managed interface active!\n"); 758 data->error = true; 759 return; 760 } 761 762 data->vif = vif; 763} 764 765static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 766 struct ieee80211_sta *ap_sta) 767{ 768 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 769 struct ieee80211_chanctx_conf *ctx; 770 u8 chains_static, chains_dynamic; 771 struct cfg80211_chan_def chandef; 772 int ret, i; 773 struct iwl_binding_cmd binding_cmd = {}; 774 struct iwl_time_quota_cmd quota_cmd = {}; 775 u32 status; 776 777 /* add back the PHY */ 778 if (WARN_ON(!mvmvif->phy_ctxt)) 779 return -EINVAL; 780 781 rcu_read_lock(); 782 ctx = rcu_dereference(vif->chanctx_conf); 783 if (WARN_ON(!ctx)) { 784 rcu_read_unlock(); 785 return -EINVAL; 786 } 787 chandef = ctx->def; 788 chains_static = ctx->rx_chains_static; 789 chains_dynamic = ctx->rx_chains_dynamic; 790 rcu_read_unlock(); 791 792 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, 793 chains_static, chains_dynamic); 794 if (ret) 795 return ret; 796 797 /* add back the MAC */ 798 mvmvif->uploaded = false; 799 800 if (WARN_ON(!vif->bss_conf.assoc)) 801 return -EINVAL; 802 /* hack */ 803 vif->bss_conf.assoc = false; 804 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 805 vif->bss_conf.assoc = true; 806 if (ret) 807 return ret; 808 809 /* add back binding - XXX refactor? */ 810 binding_cmd.id_and_color = 811 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 812 mvmvif->phy_ctxt->color)); 813 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); 814 binding_cmd.phy = 815 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 816 mvmvif->phy_ctxt->color)); 817 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 818 mvmvif->color)); 819 for (i = 1; i < MAX_MACS_IN_BINDING; i++) 820 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 821 822 status = 0; 823 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 824 sizeof(binding_cmd), &binding_cmd, 825 &status); 826 if (ret) { 827 IWL_ERR(mvm, "Failed to add binding: %d\n", ret); 828 return ret; 829 } 830 831 if (status) { 832 IWL_ERR(mvm, "Binding command failed: %u\n", status); 833 return -EIO; 834 } 835 836 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false); 837 if (ret) 838 return ret; 839 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); 840 841 ret = iwl_mvm_mac_ctxt_changed(mvm, vif); 842 if (ret) 843 return ret; 844 845 /* and some quota */ 846 quota_cmd.quotas[0].id_and_color = 847 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, 848 mvmvif->phy_ctxt->color)); 849 quota_cmd.quotas[0].quota = cpu_to_le32(100); 850 quota_cmd.quotas[0].max_duration = cpu_to_le32(1000); 851 852 for (i = 1; i < MAX_BINDINGS; i++) 853 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); 854 855 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, CMD_SYNC, 856 sizeof(quota_cmd), "a_cmd); 857 if (ret) 858 IWL_ERR(mvm, "Failed to send quota: %d\n", ret); 859 860 return 0; 861} 862 863static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, 864 struct ieee80211_vif *vif) 865{ 866 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 867 struct iwl_nonqos_seq_query_cmd query_cmd = { 868 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), 869 .mac_id_n_color = 870 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 871 mvmvif->color)), 872 }; 873 struct iwl_host_cmd cmd = { 874 .id = NON_QOS_TX_COUNTER_CMD, 875 .flags = CMD_SYNC | CMD_WANT_SKB, 876 }; 877 int err; 878 u32 size; 879 880 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API) { 881 cmd.data[0] = &query_cmd; 882 cmd.len[0] = sizeof(query_cmd); 883 } 884 885 err = iwl_mvm_send_cmd(mvm, &cmd); 886 if (err) 887 return err; 888 889 size = le32_to_cpu(cmd.resp_pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; 890 size -= sizeof(cmd.resp_pkt->hdr); 891 if (size < sizeof(__le16)) { 892 err = -EINVAL; 893 } else { 894 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); 895 /* new API returns next, not last-used seqno */ 896 if (mvm->fw->ucode_capa.flags & 897 IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API) 898 err -= 0x10; 899 } 900 901 iwl_free_resp(&cmd); 902 return err; 903} 904 905void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 906{ 907 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 908 struct iwl_nonqos_seq_query_cmd query_cmd = { 909 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), 910 .mac_id_n_color = 911 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 912 mvmvif->color)), 913 .value = cpu_to_le16(mvmvif->seqno), 914 }; 915 916 /* return if called during restart, not resume from D3 */ 917 if (!mvmvif->seqno_valid) 918 return; 919 920 mvmvif->seqno_valid = false; 921 922 if (!(mvm->fw->ucode_capa.flags & 923 IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API)) 924 return; 925 926 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, CMD_SYNC, 927 sizeof(query_cmd), &query_cmd)) 928 IWL_ERR(mvm, "failed to set non-QoS seqno\n"); 929} 930 931static int __iwl_mvm_suspend(struct ieee80211_hw *hw, 932 struct cfg80211_wowlan *wowlan, 933 bool test) 934{ 935 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 936 struct iwl_d3_iter_data suspend_iter_data = { 937 .mvm = mvm, 938 }; 939 struct ieee80211_vif *vif; 940 struct iwl_mvm_vif *mvmvif; 941 struct ieee80211_sta *ap_sta; 942 struct iwl_mvm_sta *mvm_ap_sta; 943 struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; 944 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; 945 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; 946 struct iwl_d3_manager_config d3_cfg_cmd_data = { 947 /* 948 * Program the minimum sleep time to 10 seconds, as many 949 * platforms have issues processing a wakeup signal while 950 * still being in the process of suspending. 951 */ 952 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), 953 }; 954 struct iwl_host_cmd d3_cfg_cmd = { 955 .id = D3_CONFIG_CMD, 956 .flags = CMD_SYNC | CMD_WANT_SKB, 957 .data[0] = &d3_cfg_cmd_data, 958 .len[0] = sizeof(d3_cfg_cmd_data), 959 }; 960 struct wowlan_key_data key_data = { 961 .use_rsc_tsc = false, 962 .tkip = &tkip_cmd, 963 .use_tkip = false, 964 }; 965 int ret, i; 966 int len __maybe_unused; 967 u8 old_aux_sta_id, old_ap_sta_id = IWL_MVM_STATION_COUNT; 968 969 if (!wowlan) { 970 /* 971 * mac80211 shouldn't get here, but for D3 test 972 * it doesn't warrant a warning 973 */ 974 WARN_ON(!test); 975 return -EINVAL; 976 } 977 978 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); 979 if (!key_data.rsc_tsc) 980 return -ENOMEM; 981 982 mutex_lock(&mvm->mutex); 983 984 old_aux_sta_id = mvm->aux_sta.sta_id; 985 986 /* see if there's only a single BSS vif and it's associated */ 987 ieee80211_iterate_active_interfaces_atomic( 988 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 989 iwl_mvm_d3_iface_iterator, &suspend_iter_data); 990 991 if (suspend_iter_data.error || !suspend_iter_data.vif) { 992 ret = 1; 993 goto out_noreset; 994 } 995 996 vif = suspend_iter_data.vif; 997 mvmvif = iwl_mvm_vif_from_mac80211(vif); 998 999 ap_sta = rcu_dereference_protected( 1000 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], 1001 lockdep_is_held(&mvm->mutex)); 1002 if (IS_ERR_OR_NULL(ap_sta)) { 1003 ret = -EINVAL; 1004 goto out_noreset; 1005 } 1006 1007 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 1008 1009 /* TODO: wowlan_config_cmd.wowlan_ba_teardown_tids */ 1010 1011 wowlan_config_cmd.is_11n_connection = ap_sta->ht_cap.ht_supported; 1012 1013 /* Query the last used seqno and set it */ 1014 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); 1015 if (ret < 0) 1016 goto out_noreset; 1017 wowlan_config_cmd.non_qos_seq = cpu_to_le16(ret); 1018 1019 /* 1020 * For QoS counters, we store the one to use next, so subtract 0x10 1021 * since the uCode will add 0x10 *before* using the value while we 1022 * increment after using the value (i.e. store the next value to use). 1023 */ 1024 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1025 u16 seq = mvm_ap_sta->tid_data[i].seq_number; 1026 seq -= 0x10; 1027 wowlan_config_cmd.qos_seq[i] = cpu_to_le16(seq); 1028 } 1029 1030 if (wowlan->disconnect) 1031 wowlan_config_cmd.wakeup_filter |= 1032 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | 1033 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 1034 if (wowlan->magic_pkt) 1035 wowlan_config_cmd.wakeup_filter |= 1036 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); 1037 if (wowlan->gtk_rekey_failure) 1038 wowlan_config_cmd.wakeup_filter |= 1039 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); 1040 if (wowlan->eap_identity_req) 1041 wowlan_config_cmd.wakeup_filter |= 1042 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); 1043 if (wowlan->four_way_handshake) 1044 wowlan_config_cmd.wakeup_filter |= 1045 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); 1046 if (wowlan->n_patterns) 1047 wowlan_config_cmd.wakeup_filter |= 1048 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); 1049 1050 if (wowlan->rfkill_release) 1051 wowlan_config_cmd.wakeup_filter |= 1052 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); 1053 1054 if (wowlan->tcp) { 1055 /* 1056 * Set the "link change" (really "link lost") flag as well 1057 * since that implies losing the TCP connection. 1058 */ 1059 wowlan_config_cmd.wakeup_filter |= 1060 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | 1061 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | 1062 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | 1063 IWL_WOWLAN_WAKEUP_LINK_CHANGE); 1064 } 1065 1066 iwl_mvm_cancel_scan(mvm); 1067 1068 iwl_trans_stop_device(mvm->trans); 1069 1070 /* 1071 * The D3 firmware still hardcodes the AP station ID for the 1072 * BSS we're associated with as 0. Store the real STA ID here 1073 * and assign 0. When we leave this function, we'll restore 1074 * the original value for the resume code. 1075 */ 1076 old_ap_sta_id = mvm_ap_sta->sta_id; 1077 mvm_ap_sta->sta_id = 0; 1078 mvmvif->ap_sta_id = 0; 1079 1080 /* 1081 * Set the HW restart bit -- this is mostly true as we're 1082 * going to load new firmware and reprogram that, though 1083 * the reprogramming is going to be manual to avoid adding 1084 * all the MACs that aren't support. 1085 * We don't have to clear up everything though because the 1086 * reprogramming is manual. When we resume, we'll actually 1087 * go through a proper restart sequence again to switch 1088 * back to the runtime firmware image. 1089 */ 1090 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1091 1092 /* We reprogram keys and shouldn't allocate new key indices */ 1093 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1094 1095 mvm->ptk_ivlen = 0; 1096 mvm->ptk_icvlen = 0; 1097 mvm->ptk_ivlen = 0; 1098 mvm->ptk_icvlen = 0; 1099 1100 /* 1101 * The D3 firmware still hardcodes the AP station ID for the 1102 * BSS we're associated with as 0. As a result, we have to move 1103 * the auxiliary station to ID 1 so the ID 0 remains free for 1104 * the AP station for later. 1105 * We set the sta_id to 1 here, and reset it to its previous 1106 * value (that we stored above) later. 1107 */ 1108 mvm->aux_sta.sta_id = 1; 1109 1110 ret = iwl_mvm_load_d3_fw(mvm); 1111 if (ret) 1112 goto out; 1113 1114 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); 1115 if (ret) 1116 goto out; 1117 1118 if (!iwlwifi_mod_params.sw_crypto) { 1119 /* 1120 * This needs to be unlocked due to lock ordering 1121 * constraints. Since we're in the suspend path 1122 * that isn't really a problem though. 1123 */ 1124 mutex_unlock(&mvm->mutex); 1125 ieee80211_iter_keys(mvm->hw, vif, 1126 iwl_mvm_wowlan_program_keys, 1127 &key_data); 1128 mutex_lock(&mvm->mutex); 1129 if (key_data.error) { 1130 ret = -EIO; 1131 goto out; 1132 } 1133 1134 if (key_data.use_rsc_tsc) { 1135 struct iwl_host_cmd rsc_tsc_cmd = { 1136 .id = WOWLAN_TSC_RSC_PARAM, 1137 .flags = CMD_SYNC, 1138 .data[0] = key_data.rsc_tsc, 1139 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1140 .len[0] = sizeof(*key_data.rsc_tsc), 1141 }; 1142 1143 ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd); 1144 if (ret) 1145 goto out; 1146 } 1147 1148 if (key_data.use_tkip) { 1149 ret = iwl_mvm_send_cmd_pdu(mvm, 1150 WOWLAN_TKIP_PARAM, 1151 CMD_SYNC, sizeof(tkip_cmd), 1152 &tkip_cmd); 1153 if (ret) 1154 goto out; 1155 } 1156 1157 if (mvmvif->rekey_data.valid) { 1158 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); 1159 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, 1160 NL80211_KCK_LEN); 1161 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); 1162 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, 1163 NL80211_KEK_LEN); 1164 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); 1165 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; 1166 1167 ret = iwl_mvm_send_cmd_pdu(mvm, 1168 WOWLAN_KEK_KCK_MATERIAL, 1169 CMD_SYNC, 1170 sizeof(kek_kck_cmd), 1171 &kek_kck_cmd); 1172 if (ret) 1173 goto out; 1174 } 1175 } 1176 1177 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 1178 CMD_SYNC, sizeof(wowlan_config_cmd), 1179 &wowlan_config_cmd); 1180 if (ret) 1181 goto out; 1182 1183 ret = iwl_mvm_send_patterns(mvm, wowlan); 1184 if (ret) 1185 goto out; 1186 1187 ret = iwl_mvm_send_proto_offload(mvm, vif); 1188 if (ret) 1189 goto out; 1190 1191 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); 1192 if (ret) 1193 goto out; 1194 1195 ret = iwl_mvm_power_update_device_mode(mvm); 1196 if (ret) 1197 goto out; 1198 1199 ret = iwl_mvm_power_update_mode(mvm, vif); 1200 if (ret) 1201 goto out; 1202 1203#ifdef CONFIG_IWLWIFI_DEBUGFS 1204 if (mvm->d3_wake_sysassert) 1205 d3_cfg_cmd_data.wakeup_flags |= 1206 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); 1207#endif 1208 1209 /* must be last -- this switches firmware state */ 1210 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); 1211 if (ret) 1212 goto out; 1213#ifdef CONFIG_IWLWIFI_DEBUGFS 1214 len = le32_to_cpu(d3_cfg_cmd.resp_pkt->len_n_flags) & 1215 FH_RSCSR_FRAME_SIZE_MSK; 1216 if (len >= sizeof(u32) * 2) { 1217 mvm->d3_test_pme_ptr = 1218 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); 1219 } else if (test) { 1220 /* in test mode we require the pointer */ 1221 ret = -EIO; 1222 goto out; 1223 } 1224#endif 1225 iwl_free_resp(&d3_cfg_cmd); 1226 1227 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1228 1229 iwl_trans_d3_suspend(mvm->trans, test); 1230 out: 1231 mvm->aux_sta.sta_id = old_aux_sta_id; 1232 mvm_ap_sta->sta_id = old_ap_sta_id; 1233 mvmvif->ap_sta_id = old_ap_sta_id; 1234 out_noreset: 1235 kfree(key_data.rsc_tsc); 1236 if (ret < 0) 1237 ieee80211_restart_hw(mvm->hw); 1238 1239 mutex_unlock(&mvm->mutex); 1240 1241 return ret; 1242} 1243 1244int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 1245{ 1246 return __iwl_mvm_suspend(hw, wowlan, false); 1247} 1248 1249/* converted data from the different status responses */ 1250struct iwl_wowlan_status_data { 1251 u16 pattern_number; 1252 u16 qos_seq_ctr[8]; 1253 u32 wakeup_reasons; 1254 u32 wake_packet_length; 1255 u32 wake_packet_bufsize; 1256 const u8 *wake_packet; 1257}; 1258 1259static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, 1260 struct ieee80211_vif *vif, 1261 struct iwl_wowlan_status_data *status) 1262{ 1263 struct sk_buff *pkt = NULL; 1264 struct cfg80211_wowlan_wakeup wakeup = { 1265 .pattern_idx = -1, 1266 }; 1267 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; 1268 u32 reasons = status->wakeup_reasons; 1269 1270 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { 1271 wakeup_report = NULL; 1272 goto report; 1273 } 1274 1275 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) 1276 wakeup.magic_pkt = true; 1277 1278 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) 1279 wakeup.pattern_idx = 1280 status->pattern_number; 1281 1282 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | 1283 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) 1284 wakeup.disconnect = true; 1285 1286 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) 1287 wakeup.gtk_rekey_failure = true; 1288 1289 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) 1290 wakeup.rfkill_release = true; 1291 1292 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) 1293 wakeup.eap_identity_req = true; 1294 1295 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) 1296 wakeup.four_way_handshake = true; 1297 1298 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) 1299 wakeup.tcp_connlost = true; 1300 1301 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) 1302 wakeup.tcp_nomoretokens = true; 1303 1304 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) 1305 wakeup.tcp_match = true; 1306 1307 if (status->wake_packet_bufsize) { 1308 int pktsize = status->wake_packet_bufsize; 1309 int pktlen = status->wake_packet_length; 1310 const u8 *pktdata = status->wake_packet; 1311 struct ieee80211_hdr *hdr = (void *)pktdata; 1312 int truncated = pktlen - pktsize; 1313 1314 /* this would be a firmware bug */ 1315 if (WARN_ON_ONCE(truncated < 0)) 1316 truncated = 0; 1317 1318 if (ieee80211_is_data(hdr->frame_control)) { 1319 int hdrlen = ieee80211_hdrlen(hdr->frame_control); 1320 int ivlen = 0, icvlen = 4; /* also FCS */ 1321 1322 pkt = alloc_skb(pktsize, GFP_KERNEL); 1323 if (!pkt) 1324 goto report; 1325 1326 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen); 1327 pktdata += hdrlen; 1328 pktsize -= hdrlen; 1329 1330 if (ieee80211_has_protected(hdr->frame_control)) { 1331 /* 1332 * This is unlocked and using gtk_i(c)vlen, 1333 * but since everything is under RTNL still 1334 * that's not really a problem - changing 1335 * it would be difficult. 1336 */ 1337 if (is_multicast_ether_addr(hdr->addr1)) { 1338 ivlen = mvm->gtk_ivlen; 1339 icvlen += mvm->gtk_icvlen; 1340 } else { 1341 ivlen = mvm->ptk_ivlen; 1342 icvlen += mvm->ptk_icvlen; 1343 } 1344 } 1345 1346 /* if truncated, FCS/ICV is (partially) gone */ 1347 if (truncated >= icvlen) { 1348 icvlen = 0; 1349 truncated -= icvlen; 1350 } else { 1351 icvlen -= truncated; 1352 truncated = 0; 1353 } 1354 1355 pktsize -= ivlen + icvlen; 1356 pktdata += ivlen; 1357 1358 memcpy(skb_put(pkt, pktsize), pktdata, pktsize); 1359 1360 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) 1361 goto report; 1362 wakeup.packet = pkt->data; 1363 wakeup.packet_present_len = pkt->len; 1364 wakeup.packet_len = pkt->len - truncated; 1365 wakeup.packet_80211 = false; 1366 } else { 1367 int fcslen = 4; 1368 1369 if (truncated >= 4) { 1370 truncated -= 4; 1371 fcslen = 0; 1372 } else { 1373 fcslen -= truncated; 1374 truncated = 0; 1375 } 1376 pktsize -= fcslen; 1377 wakeup.packet = status->wake_packet; 1378 wakeup.packet_present_len = pktsize; 1379 wakeup.packet_len = pktlen - truncated; 1380 wakeup.packet_80211 = true; 1381 } 1382 } 1383 1384 report: 1385 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); 1386 kfree_skb(pkt); 1387} 1388 1389static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, 1390 struct ieee80211_key_seq *seq) 1391{ 1392 u64 pn; 1393 1394 pn = le64_to_cpu(sc->pn); 1395 seq->ccmp.pn[0] = pn >> 40; 1396 seq->ccmp.pn[1] = pn >> 32; 1397 seq->ccmp.pn[2] = pn >> 24; 1398 seq->ccmp.pn[3] = pn >> 16; 1399 seq->ccmp.pn[4] = pn >> 8; 1400 seq->ccmp.pn[5] = pn; 1401} 1402 1403static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, 1404 struct ieee80211_key_seq *seq) 1405{ 1406 seq->tkip.iv32 = le32_to_cpu(sc->iv32); 1407 seq->tkip.iv16 = le16_to_cpu(sc->iv16); 1408} 1409 1410static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs, 1411 struct ieee80211_key_conf *key) 1412{ 1413 int tid; 1414 1415 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1416 1417 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1418 struct ieee80211_key_seq seq = {}; 1419 1420 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); 1421 ieee80211_set_key_rx_seq(key, tid, &seq); 1422 } 1423} 1424 1425static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, 1426 struct ieee80211_key_conf *key) 1427{ 1428 int tid; 1429 1430 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); 1431 1432 for (tid = 0; tid < IWL_NUM_RSC; tid++) { 1433 struct ieee80211_key_seq seq = {}; 1434 1435 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq); 1436 ieee80211_set_key_rx_seq(key, tid, &seq); 1437 } 1438} 1439 1440static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, 1441 struct iwl_wowlan_status_v6 *status) 1442{ 1443 union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc; 1444 1445 switch (key->cipher) { 1446 case WLAN_CIPHER_SUITE_CCMP: 1447 iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key); 1448 break; 1449 case WLAN_CIPHER_SUITE_TKIP: 1450 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key); 1451 break; 1452 default: 1453 WARN_ON(1); 1454 } 1455} 1456 1457struct iwl_mvm_d3_gtk_iter_data { 1458 struct iwl_wowlan_status_v6 *status; 1459 void *last_gtk; 1460 u32 cipher; 1461 bool find_phase, unhandled_cipher; 1462 int num_keys; 1463}; 1464 1465static void iwl_mvm_d3_update_gtks(struct ieee80211_hw *hw, 1466 struct ieee80211_vif *vif, 1467 struct ieee80211_sta *sta, 1468 struct ieee80211_key_conf *key, 1469 void *_data) 1470{ 1471 struct iwl_mvm_d3_gtk_iter_data *data = _data; 1472 1473 if (data->unhandled_cipher) 1474 return; 1475 1476 switch (key->cipher) { 1477 case WLAN_CIPHER_SUITE_WEP40: 1478 case WLAN_CIPHER_SUITE_WEP104: 1479 /* ignore WEP completely, nothing to do */ 1480 return; 1481 case WLAN_CIPHER_SUITE_CCMP: 1482 case WLAN_CIPHER_SUITE_TKIP: 1483 /* we support these */ 1484 break; 1485 default: 1486 /* everything else (even CMAC for MFP) - disconnect from AP */ 1487 data->unhandled_cipher = true; 1488 return; 1489 } 1490 1491 data->num_keys++; 1492 1493 /* 1494 * pairwise key - update sequence counters only; 1495 * note that this assumes no TDLS sessions are active 1496 */ 1497 if (sta) { 1498 struct ieee80211_key_seq seq = {}; 1499 union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc; 1500 1501 if (data->find_phase) 1502 return; 1503 1504 switch (key->cipher) { 1505 case WLAN_CIPHER_SUITE_CCMP: 1506 iwl_mvm_aes_sc_to_seq(&sc->aes.tsc, &seq); 1507 iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key); 1508 break; 1509 case WLAN_CIPHER_SUITE_TKIP: 1510 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq); 1511 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key); 1512 break; 1513 } 1514 ieee80211_set_key_tx_seq(key, &seq); 1515 1516 /* that's it for this key */ 1517 return; 1518 } 1519 1520 if (data->find_phase) { 1521 data->last_gtk = key; 1522 data->cipher = key->cipher; 1523 return; 1524 } 1525 1526 if (data->status->num_of_gtk_rekeys) 1527 ieee80211_remove_key(key); 1528 else if (data->last_gtk == key) 1529 iwl_mvm_set_key_rx_seq(key, data->status); 1530} 1531 1532static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, 1533 struct ieee80211_vif *vif, 1534 struct iwl_wowlan_status_v6 *status) 1535{ 1536 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1537 struct iwl_mvm_d3_gtk_iter_data gtkdata = { 1538 .status = status, 1539 }; 1540 1541 if (!status || !vif->bss_conf.bssid) 1542 return false; 1543 1544 /* find last GTK that we used initially, if any */ 1545 gtkdata.find_phase = true; 1546 ieee80211_iter_keys(mvm->hw, vif, 1547 iwl_mvm_d3_update_gtks, >kdata); 1548 /* not trying to keep connections with MFP/unhandled ciphers */ 1549 if (gtkdata.unhandled_cipher) 1550 return false; 1551 if (!gtkdata.num_keys) 1552 return true; 1553 if (!gtkdata.last_gtk) 1554 return false; 1555 1556 /* 1557 * invalidate all other GTKs that might still exist and update 1558 * the one that we used 1559 */ 1560 gtkdata.find_phase = false; 1561 ieee80211_iter_keys(mvm->hw, vif, 1562 iwl_mvm_d3_update_gtks, >kdata); 1563 1564 if (status->num_of_gtk_rekeys) { 1565 struct ieee80211_key_conf *key; 1566 struct { 1567 struct ieee80211_key_conf conf; 1568 u8 key[32]; 1569 } conf = { 1570 .conf.cipher = gtkdata.cipher, 1571 .conf.keyidx = status->gtk.key_index, 1572 }; 1573 1574 switch (gtkdata.cipher) { 1575 case WLAN_CIPHER_SUITE_CCMP: 1576 conf.conf.keylen = WLAN_KEY_LEN_CCMP; 1577 memcpy(conf.conf.key, status->gtk.decrypt_key, 1578 WLAN_KEY_LEN_CCMP); 1579 break; 1580 case WLAN_CIPHER_SUITE_TKIP: 1581 conf.conf.keylen = WLAN_KEY_LEN_TKIP; 1582 memcpy(conf.conf.key, status->gtk.decrypt_key, 16); 1583 /* leave TX MIC key zeroed, we don't use it anyway */ 1584 memcpy(conf.conf.key + 1585 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, 1586 status->gtk.tkip_mic_key, 8); 1587 break; 1588 } 1589 1590 key = ieee80211_gtk_rekey_add(vif, &conf.conf); 1591 if (IS_ERR(key)) 1592 return false; 1593 iwl_mvm_set_key_rx_seq(key, status); 1594 } 1595 1596 if (status->num_of_gtk_rekeys) { 1597 __be64 replay_ctr = 1598 cpu_to_be64(le64_to_cpu(status->replay_ctr)); 1599 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, 1600 (void *)&replay_ctr, GFP_KERNEL); 1601 } 1602 1603 mvmvif->seqno_valid = true; 1604 /* +0x10 because the set API expects next-to-use, not last-used */ 1605 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10; 1606 1607 return true; 1608} 1609 1610/* releases the MVM mutex */ 1611static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, 1612 struct ieee80211_vif *vif) 1613{ 1614 u32 base = mvm->error_event_table; 1615 struct error_table_start { 1616 /* cf. struct iwl_error_event_table */ 1617 u32 valid; 1618 u32 error_id; 1619 } err_info; 1620 struct iwl_host_cmd cmd = { 1621 .id = WOWLAN_GET_STATUSES, 1622 .flags = CMD_SYNC | CMD_WANT_SKB, 1623 }; 1624 struct iwl_wowlan_status_data status; 1625 struct iwl_wowlan_status_v6 *status_v6; 1626 int ret, len, status_size, i; 1627 bool keep; 1628 struct ieee80211_sta *ap_sta; 1629 struct iwl_mvm_sta *mvm_ap_sta; 1630 1631 iwl_trans_read_mem_bytes(mvm->trans, base, 1632 &err_info, sizeof(err_info)); 1633 1634 if (err_info.valid) { 1635 IWL_INFO(mvm, "error table is valid (%d)\n", 1636 err_info.valid); 1637 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { 1638 struct cfg80211_wowlan_wakeup wakeup = { 1639 .rfkill_release = true, 1640 }; 1641 ieee80211_report_wowlan_wakeup(vif, &wakeup, 1642 GFP_KERNEL); 1643 } 1644 goto out_unlock; 1645 } 1646 1647 /* only for tracing for now */ 1648 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, CMD_SYNC, 0, NULL); 1649 if (ret) 1650 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); 1651 1652 ret = iwl_mvm_send_cmd(mvm, &cmd); 1653 if (ret) { 1654 IWL_ERR(mvm, "failed to query status (%d)\n", ret); 1655 goto out_unlock; 1656 } 1657 1658 /* RF-kill already asserted again... */ 1659 if (!cmd.resp_pkt) 1660 goto out_unlock; 1661 1662 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API) 1663 status_size = sizeof(struct iwl_wowlan_status_v6); 1664 else 1665 status_size = sizeof(struct iwl_wowlan_status_v4); 1666 1667 len = le32_to_cpu(cmd.resp_pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; 1668 if (len - sizeof(struct iwl_cmd_header) < status_size) { 1669 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1670 goto out_free_resp; 1671 } 1672 1673 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_D3_CONTINUITY_API) { 1674 status_v6 = (void *)cmd.resp_pkt->data; 1675 1676 status.pattern_number = le16_to_cpu(status_v6->pattern_number); 1677 for (i = 0; i < 8; i++) 1678 status.qos_seq_ctr[i] = 1679 le16_to_cpu(status_v6->qos_seq_ctr[i]); 1680 status.wakeup_reasons = le32_to_cpu(status_v6->wakeup_reasons); 1681 status.wake_packet_length = 1682 le32_to_cpu(status_v6->wake_packet_length); 1683 status.wake_packet_bufsize = 1684 le32_to_cpu(status_v6->wake_packet_bufsize); 1685 status.wake_packet = status_v6->wake_packet; 1686 } else { 1687 struct iwl_wowlan_status_v4 *status_v4; 1688 status_v6 = NULL; 1689 status_v4 = (void *)cmd.resp_pkt->data; 1690 1691 status.pattern_number = le16_to_cpu(status_v4->pattern_number); 1692 for (i = 0; i < 8; i++) 1693 status.qos_seq_ctr[i] = 1694 le16_to_cpu(status_v4->qos_seq_ctr[i]); 1695 status.wakeup_reasons = le32_to_cpu(status_v4->wakeup_reasons); 1696 status.wake_packet_length = 1697 le32_to_cpu(status_v4->wake_packet_length); 1698 status.wake_packet_bufsize = 1699 le32_to_cpu(status_v4->wake_packet_bufsize); 1700 status.wake_packet = status_v4->wake_packet; 1701 } 1702 1703 if (len - sizeof(struct iwl_cmd_header) != 1704 status_size + ALIGN(status.wake_packet_bufsize, 4)) { 1705 IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); 1706 goto out_free_resp; 1707 } 1708 1709 /* still at hard-coded place 0 for D3 image */ 1710 ap_sta = rcu_dereference_protected( 1711 mvm->fw_id_to_mac_id[0], 1712 lockdep_is_held(&mvm->mutex)); 1713 if (IS_ERR_OR_NULL(ap_sta)) 1714 goto out_free_resp; 1715 1716 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; 1717 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 1718 u16 seq = status.qos_seq_ctr[i]; 1719 /* firmware stores last-used value, we store next value */ 1720 seq += 0x10; 1721 mvm_ap_sta->tid_data[i].seq_number = seq; 1722 } 1723 1724 /* now we have all the data we need, unlock to avoid mac80211 issues */ 1725 mutex_unlock(&mvm->mutex); 1726 1727 iwl_mvm_report_wakeup_reasons(mvm, vif, &status); 1728 1729 keep = iwl_mvm_setup_connection_keep(mvm, vif, status_v6); 1730 1731 iwl_free_resp(&cmd); 1732 return keep; 1733 1734 out_free_resp: 1735 iwl_free_resp(&cmd); 1736 out_unlock: 1737 mutex_unlock(&mvm->mutex); 1738 return false; 1739} 1740 1741static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm) 1742{ 1743#ifdef CONFIG_IWLWIFI_DEBUGFS 1744 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN]; 1745 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len; 1746 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset; 1747 1748 if (!mvm->store_d3_resume_sram) 1749 return; 1750 1751 if (!mvm->d3_resume_sram) { 1752 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL); 1753 if (!mvm->d3_resume_sram) 1754 return; 1755 } 1756 1757 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len); 1758#endif 1759} 1760 1761static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, 1762 struct ieee80211_vif *vif) 1763{ 1764 /* skip the one we keep connection on */ 1765 if (data == vif) 1766 return; 1767 1768 if (vif->type == NL80211_IFTYPE_STATION) 1769 ieee80211_resume_disconnect(vif); 1770} 1771 1772static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) 1773{ 1774 struct iwl_d3_iter_data resume_iter_data = { 1775 .mvm = mvm, 1776 }; 1777 struct ieee80211_vif *vif = NULL; 1778 int ret; 1779 enum iwl_d3_status d3_status; 1780 bool keep = false; 1781 1782 mutex_lock(&mvm->mutex); 1783 1784 /* get the BSS vif pointer again */ 1785 ieee80211_iterate_active_interfaces_atomic( 1786 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1787 iwl_mvm_d3_iface_iterator, &resume_iter_data); 1788 1789 if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif)) 1790 goto out_unlock; 1791 1792 vif = resume_iter_data.vif; 1793 1794 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test); 1795 if (ret) 1796 goto out_unlock; 1797 1798 if (d3_status != IWL_D3_STATUS_ALIVE) { 1799 IWL_INFO(mvm, "Device was reset during suspend\n"); 1800 goto out_unlock; 1801 } 1802 1803 /* query SRAM first in case we want event logging */ 1804 iwl_mvm_read_d3_sram(mvm); 1805 1806 keep = iwl_mvm_query_wakeup_reasons(mvm, vif); 1807 /* has unlocked the mutex, so skip that */ 1808 goto out; 1809 1810 out_unlock: 1811 mutex_unlock(&mvm->mutex); 1812 1813 out: 1814 if (!test) 1815 ieee80211_iterate_active_interfaces_rtnl(mvm->hw, 1816 IEEE80211_IFACE_ITER_NORMAL, 1817 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); 1818 1819 /* return 1 to reconfigure the device */ 1820 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1821 return 1; 1822} 1823 1824int iwl_mvm_resume(struct ieee80211_hw *hw) 1825{ 1826 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1827 1828 return __iwl_mvm_resume(mvm, false); 1829} 1830 1831void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) 1832{ 1833 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1834 1835 device_set_wakeup_enable(mvm->trans->dev, enabled); 1836} 1837 1838#ifdef CONFIG_IWLWIFI_DEBUGFS 1839static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) 1840{ 1841 struct iwl_mvm *mvm = inode->i_private; 1842 int err; 1843 1844 if (mvm->d3_test_active) 1845 return -EBUSY; 1846 1847 file->private_data = inode->i_private; 1848 1849 ieee80211_stop_queues(mvm->hw); 1850 synchronize_net(); 1851 1852 /* start pseudo D3 */ 1853 rtnl_lock(); 1854 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); 1855 rtnl_unlock(); 1856 if (err > 0) 1857 err = -EINVAL; 1858 if (err) { 1859 ieee80211_wake_queues(mvm->hw); 1860 return err; 1861 } 1862 mvm->d3_test_active = true; 1863 return 0; 1864} 1865 1866static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, 1867 size_t count, loff_t *ppos) 1868{ 1869 struct iwl_mvm *mvm = file->private_data; 1870 u32 pme_asserted; 1871 1872 while (true) { 1873 pme_asserted = iwl_trans_read_mem32(mvm->trans, 1874 mvm->d3_test_pme_ptr); 1875 if (pme_asserted) 1876 break; 1877 if (msleep_interruptible(100)) 1878 break; 1879 } 1880 1881 return 0; 1882} 1883 1884static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, 1885 struct ieee80211_vif *vif) 1886{ 1887 if (vif->type == NL80211_IFTYPE_STATION) 1888 ieee80211_connection_loss(vif); 1889} 1890 1891static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) 1892{ 1893 struct iwl_mvm *mvm = inode->i_private; 1894 int remaining_time = 10; 1895 1896 mvm->d3_test_active = false; 1897 __iwl_mvm_resume(mvm, true); 1898 iwl_abort_notification_waits(&mvm->notif_wait); 1899 ieee80211_restart_hw(mvm->hw); 1900 1901 /* wait for restart and disconnect all interfaces */ 1902 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 1903 remaining_time > 0) { 1904 remaining_time--; 1905 msleep(1000); 1906 } 1907 1908 if (remaining_time == 0) 1909 IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n"); 1910 1911 ieee80211_iterate_active_interfaces_atomic( 1912 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1913 iwl_mvm_d3_test_disconn_work_iter, NULL); 1914 1915 ieee80211_wake_queues(mvm->hw); 1916 1917 return 0; 1918} 1919 1920const struct file_operations iwl_dbgfs_d3_test_ops = { 1921 .llseek = no_llseek, 1922 .open = iwl_mvm_d3_test_open, 1923 .read = iwl_mvm_d3_test_read, 1924 .release = iwl_mvm_d3_test_release, 1925}; 1926#endif 1927